我有一个使用 PV /dev/md1 和 /dev/md2 的 VG。现在 /dev/md1 中的一个硬盘出现故障：
[root@xenserver1 ~]# cat /proc/mdstat
Personalities : [raid1]
md1 : active raid1 sda3[0]
382320128 blocks [2/1] [U_]
md2 : active raid1 sdc4[0] sdd4[1]
1562805632 blocks [2/2] [UU]
md0 : active raid1 sda1[0]
4194240 blocks [2/1] [U_]
unused devices: <none>
因为，我收到以下 LVM 错误：
[root@xenserver1 ~]# pvscan
WARNING: Volume Group VG_XenStorage-00c0d7a2-7054-c4fc-414a-e6c6a43b9cca is not consistent
PV /dev/md1 VG VG_XenStorage-00c0d7a2-7054-c4fc-414a-e6c6a43b9cca lvm2 [364.61 GB / 150.25 GB free]
PV /dev/md2 VG VG_XenStorage-00c0d7a2-7054-c4fc-414a-e6c6a43b9cca lvm2 [1.46 TB / 1.35 TB free]
Total: 2 [1.81 TB] / in use: 2 [1.81 TB] / in no VG: 0 [0 ]
我尝试过vgcfgrestore --file /etc/lvm/backup/VG_XenStorage-00c0d7a2-7054-c4fc-414a-e6c6a43b9cca VG_XenStorage-00c0d7a2-7054-c4fc-414a-e6c6a43b9cca，但是没有成功。
如果我执行vgscan我得到：
[root@xenserver1 ~]# vgscan
Reading all physical volumes. This may take a while...
Volume group "VG_XenStorage-00c0d7a2-7054-c4fc-414a-e6c6a43b9cca" inconsistent, run as master to correct
*** glibc detected *** vgscan: corrupted double-linked list: 0x09048780 ***
======= Backtrace: =========
/lib/libc.so.6[0xb75b9629]
/lib/libc.so.6(cfree+0x59)[0xb75b99e9]
/lib/libdevmapper.so.1.02(dm_pool_destroy+0x3b)[0xb779bd5b]
vgscan(vg_release+0x38)[0x80a8dc8]
vgscan[0x806cc2a]
vgscan(process_each_vg+0x12c)[0x806d96c]
vgscan(vgscan+0x13c)[0x80755ec]
vgscan(lvm_run_command+0x11e5)[0x8060175]
vgscan(lvm2_main+0x4ca)[0x806067a]
vgscan(main+0x32)[0x80772d2]
/lib/libc.so.6(__libc_start_main+0xdc)[0xb7565e9c]
vgscan[0x8053421]
======= Memory map: ========
08048000-080f9000 r-xp 00000000 09:00 478343 /usr/sbin/lvm
080f9000-080fe000 rw-p 000b1000 09:00 478343 /usr/sbin/lvm
080fe000-08105000 rw-p 00000000 00:00 0
09003000-09068000 rw-p 00000000 00:00 0 [heap]
b7200000-b7221000 rw-p 00000000 00:00 0
b7221000-b7300000 ---p 00000000 00:00 0
b7336000-b7341000 r-xp 00000000 09:00 327931 /lib/libgcc_s-4.1.2-20080825.so.1
b7341000-b7342000 rw-p 0000a000 09:00 327931 /lib/libgcc_s-4.1.2-20080825.so.1
b7347000-b734e000 r--s 00000000 09:00 410934 /usr/lib/gconv/gconv-modules.cache
b734e000-b754e000 r--p 00000000 09:00 410974 /usr/lib/locale/locale-archive
b754e000-b7550000 rw-p 00000000 00:00 0
b7550000-b76a2000 r-xp 00000000 09:00 327906 /lib/libc-2.5.so
b76a2000-b76a4000 r--p 00152000 09:00 327906 /lib/libc-2.5.so
b76a4000-b76a5000 rw-p 00154000 09:00 327906 /lib/libc-2.5.so
b76a5000-b76a8000 rw-p 00000000 00:00 0
b76a8000-b76e8000 r-xp 00000000 09:00 410540 /usr/lib/libncurses.so.5.5
b76e8000-b76f0000 rw-p 00040000 09:00 410540 /usr/lib/libncurses.so.5.5
b76f0000-b76f1000 rw-p 00000000 00:00 0
b76f1000-b76f4000 r-xp 00000000 09:00 327921 /lib/libdl-2.5.so
b76f4000-b76f5000 r--p 00002000 09:00 327921 /lib/libdl-2.5.so
b76f5000-b76f6000 rw-p 00003000 09:00 327921 /lib/libdl-2.5.so
b76f6000-b7731000 r-xp 00000000 09:00 327957 /lib/libsepol.so.1
b7731000-b7732000 rw-p 0003b000 09:00 327957 /lib/libsepol.so.1
b7732000-b773c000 rw-p 00000000 00:00 0
b773c000-b7752000 r-xp 00000000 09:00 327956 /lib/libselinux.so.1
b7752000-b7754000 rw-p 00015000 09:00 327956 /lib/libselinux.so.1
b7754000-b7783000 r-xp 00000000 09:00 410572 /usr/lib/libreadline.so.5.1
b7783000-b7787000 rw-p 0002f000 09:00 410572 /usr/lib/libreadline.so.5.1
b7787000-b7789000 rw-p 00000000 00:00 0
b7789000-b77a8000 r-xp 00000000 09:00 327920 /lib/libdevmapper.so.1.02
b77a8000-b77aa000 rw-p 0001e000 09:00 327920 /lib/libdevmapper.so.1.02
b77aa000-b77bf000 r-xp 00000000 09:00 327953 /lib/libpthread-2.5.so
b77bf000-b77c0000 r--p 00015000 09:00 327953 /lib/libpthread-2.5.so
b77c0000-b77c1000 rw-p 00016000 09:00 327953 /lib/libpthread-2.5.so
b77c1000-b77c3000 rw-p 00000000 00:00 0
b77c3000-b77c7000 r-xp 00000000 09:00 327918 /lib/libdevmapper-event.so.1.02
b77c7000-b77c8000 rw-p 00003000 09:00 327918 /lib/libdevmapper-event.so.1.02
b77cb000-b77cc000 rw-p 00000000 00:00 0
b77cc000-b77cd000 r--p 00796000 09:00 410974 /usr/lib/locale/locale-archive
b77cd000-b77ce000 rw-p 00000000 00:00 0
b77ce000-b77cf000 r-xp 00000000 00:00 0 [vdso]
b77cf000-b77ea000 r-xp 00000000 09:00 327897 /lib/ld-2.5.so
b77ea000-b77eb000 r--p 0001a000 09:00 327897 /lib/ld-2.5.so
b77eb000-b77ec000 rw-p 0001b000 09:00 327897 /lib/ld-2.5.so
bfd24000-bfd39000 rw-p 00000000 00:00 0 [stack]
Aborted
是否有可能恢复此 VG 上的 LV？这是什么run as master to correct意思？
编辑
这是输出mdadm -D /dev/md1
[root@xenserver1 ~]# mdadm -D /dev/md1
/dev/md1:
Version : 0.90
Creation Time : Thu Sep 22 23:14:42 2011
Raid Level : raid1
Array Size : 382320128 (364.61 GiB 391.50 GB)
Used Dev Size : 382320128 (364.61 GiB 391.50 GB)
Raid Devices : 2
Total Devices : 1
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Sat Dec 7 01:25:25 2013
State : clean, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
UUID : 3d3c12fd:51ab6cd6:83470809:bba18a55
Events : 0.49196839
Number Major Minor RaidDevice State
0 8 3 0 active sync /dev/sda3
1 0 0 1 removed
编辑2
Raid /dev/md1 现在又干净了
[root@xenserver1 ~]# mdadm -D /dev/md1
/dev/md1:
Version : 0.90
Creation Time : Thu Sep 22 23:14:42 2011
Raid Level : raid1
Array Size : 382320128 (364.61 GiB 391.50 GB)
Used Dev Size : 382320128 (364.61 GiB 391.50 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Sat Dec 7 09:14:22 2013
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 3d3c12fd:51ab6cd6:83470809:bba18a55
Events : 0.49196863
Number Major Minor RaidDevice State
0 8 3 0 active sync /dev/sda3
1 8 67 1 active sync /dev/sde3
编辑3
如果我想激活 VG，我会收到不同的错误消息：
[root@xenserver1 ~]# vgchange VG_XenStorage-00c0d7a2-7054-c4fc-414a-e6c6a43b9cca -ay
Volume group "VG_XenStorage-00c0d7a2-7054-c4fc-414a-e6c6a43b9cca" inconsistent, run as master to correct
*** glibc detected *** vgchange: double free or corruption (!prev): 0x0a033468 ***
======= Backtrace: =========
/lib/libc.so.6[0xb74e05a5]
/lib/libc.so.6(cfree+0x59)[0xb74e09e9]
/lib/libdevmapper.so.1.02(dm_pool_destroy+0x3b)[0xb76c2d5b]
vgchange(vg_release+0x38)[0x80a8dc8]
vgchange[0x806cc2a]
vgchange(process_each_vg+0x3b5)[0x806dbf5]
vgchange(vgchange+0x347)[0x806ee37]
vgchange(lvm_run_command+0x11e5)[0x8060175]
vgchange(lvm2_main+0x4ca)[0x806067a]
vgchange(main+0x32)[0x80772d2]
/lib/libc.so.6(__libc_start_main+0xdc)[0xb748ce9c]
vgchange[0x8053421]
======= Memory map: ========
08048000-080f9000 r-xp 00000000 09:00 478343 /usr/sbin/lvm
080f9000-080fe000 rw-p 000b1000 09:00 478343 /usr/sbin/lvm
080fe000-08105000 rw-p 00000000 00:00 0
09ff1000-0a058000 rw-p 00000000 00:00 0 [heap]
b725d000-b7268000 r-xp 00000000 09:00 327931 /lib/libgcc_s-4.1.2-20080825.so.1
b7268000-b7269000 rw-p 0000a000 09:00 327931 /lib/libgcc_s-4.1.2-20080825.so.1
b726e000-b7275000 r--s 00000000 09:00 410934 /usr/lib/gconv/gconv-modules.cache
b7275000-b7475000 r--p 00000000 09:00 410974 /usr/lib/locale/locale-archive
b7475000-b7477000 rw-p 00000000 00:00 0
b7477000-b75c9000 r-xp 00000000 09:00 327906 /lib/libc-2.5.so
b75c9000-b75cb000 r--p 00152000 09:00 327906 /lib/libc-2.5.so
b75cb000-b75cc000 rw-p 00154000 09:00 327906 /lib/libc-2.5.so
b75cc000-b75cf000 rw-p 00000000 00:00 0
b75cf000-b760f000 r-xp 00000000 09:00 410540 /usr/lib/libncurses.so.5.5
b760f000-b7617000 rw-p 00040000 09:00 410540 /usr/lib/libncurses.so.5.5
b7617000-b7618000 rw-p 00000000 00:00 0
b7618000-b761b000 r-xp 00000000 09:00 327921 /lib/libdl-2.5.so
b761b000-b761c000 r--p 00002000 09:00 327921 /lib/libdl-2.5.so
b761c000-b761d000 rw-p 00003000 09:00 327921 /lib/libdl-2.5.so
b761d000-b7658000 r-xp 00000000 09:00 327957 /lib/libsepol.so.1
b7658000-b7659000 rw-p 0003b000 09:00 327957 /lib/libsepol.so.1
b7659000-b7663000 rw-p 00000000 00:00 0
b7663000-b7679000 r-xp 00000000 09:00 327956 /lib/libselinux.so.1
b7679000-b767b000 rw-p 00015000 09:00 327956 /lib/libselinux.so.1
b767b000-b76aa000 r-xp 00000000 09:00 410572 /usr/lib/libreadline.so.5.1
b76aa000-b76ae000 rw-p 0002f000 09:00 410572 /usr/lib/libreadline.so.5.1
b76ae000-b76b0000 rw-p 00000000 00:00 0
b76b0000-b76cf000 r-xp 00000000 09:00 327920 /lib/libdevmapper.so.1.02
b76cf000-b76d1000 rw-p 0001e000 09:00 327920 /lib/libdevmapper.so.1.02
b76d1000-b76e6000 r-xp 00000000 09:00 327953 /lib/libpthread-2.5.so
b76e6000-b76e7000 r--p 00015000 09:00 327953 /lib/libpthread-2.5.so
b76e7000-b76e8000 rw-p 00016000 09:00 327953 /lib/libpthread-2.5.so
b76e8000-b76ea000 rw-p 00000000 00:00 0
b76ea000-b76ee000 r-xp 00000000 09:00 327918 /lib/libdevmapper-event.so.1.02
b76ee000-b76ef000 rw-p 00003000 09:00 327918 /lib/libdevmapper-event.so.1.02
b76f3000-b76f4000 r--p 00796000 09:00 410974 /usr/lib/locale/locale-archive
b76f4000-b76f5000 rw-p 00000000 00:00 0
b76f5000-b76f6000 r-xp 00000000 00:00 0 [vdso]
b76f6000-b7711000 r-xp 00000000 09:00 327897 /lib/ld-2.5.so
b7711000-b7712000 r--p 0001a000 09:00 327897 /lib/ld-2.5.so
b7712000-b7713000 rw-p 0001b000 09:00 327897 /lib/ld-2.5.so
bff17000-bff2c000 rw-p 00000000 00:00 0 [stack]
Aborted